Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"endangered plants"”.
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Populations studies on two endemic taxa of southwestern Sardinia: Dianthus morisianus Vals. (Caryophyllaceae) and Anchusa littorea Moris (Boraginaceae)
… habitats. This study concerns two narrow endemic plants growing on coastal dune systems of southwest Sardinia. Anchusa littorea Moris is a short-lived species of open dunes and D. morisianus is a perennial species which grows on stabilized dunes. The only natural populations of these species are …
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Stochastic Models For Evolutionary Genetic Problems
… estimate the persistence time of populations of endangered plants and animals is central to conservation biology and is of considerable importance in forming land-use decisions. Genetic deterioration (due to inbreeding and random genetic drift) and environmental deterioration (e.g. climate …
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The Reproductive Biology of Star Cactus (Astrophytum asterias)
No abstract prepared.
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Monitoring of prairie bushclover (Lespedeza leptostachya) in south-central Iowa
1 PDF file (ix, 71 pages)
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Testing Reintroduction Potential of Abronia macrocarpa (Nyctaginaceae)
… of Abronia macrocarpa, a federally and state endangered plant endemic to Texas. A series of laboratory tests were conducted to determine the most effective method for seed germination. Germination ranged from 0% to 68.6% among the control and twelve treatments. Seed germination was highest …
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Modeling NatureServe subnational conservation status ranks for Tennessee vascular plants
Conservation status ranks measure the potential risk of extinction for species at the global, national, and subnational levels, taking into account rarity, threats, and population trends. This study used the NatureServe system to generate provisionary subnational conservation status ranks (s-ranks) …